- fixed width and height order
- removed unused methods
- simplified signature matching
- rewrote pixel format matching in more compact form
- added dimensions number check (only 2 is allowed)
- added target buffer size check
- added debug messages in all failing points

- renamed source files
- guard the contents - always include

This reverts commit fba72cb6, reversing
changes made to 02131ffb.

added opencv_world module that combines all the other [selected by user] OpenCV modules, except for opencv_python and opencv_gpu.

Added video.hpp header (for convenience with other modules); added option to specify list of headers for Java API generator